Koreans are all about "Go-Stop," which is a card game kind of like Crazy 8's as far as I can tell. And it truly is the only card game that 99.9% of Koreans know how to play, so trying to teach them another card game that uses a standard card deck is often an exercise in futility. Trust me, I've tried.
So if you're going to have a game day and play some cards with students, you really need to get a game that has a special deck that doesn't look like regular cards. I've had a lot of success playing Skip-Bo. It's easy to explain, strategic and has a few rounds so you can play for a while.